Electric switch.



T. BOZZETTI.

ELECTRIC SWlTCH.

APPLICAHON FILED MAR. 27, 1915.

Patented Apr. 18, 1916.

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"roMMAso nozznrrr, or Team,

ITALY, ASSIGNOR TO MARICANOLA & TESTA, OF

TURIN, ITALY.

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To all whom it may concern:

Be it known that I, ToMMAso Bozzirrrr,

residing at Turin, Italy, have invented certain new and useful Improvements in Elecof arranging two wheels in parallel planes, each of said wheels having teeth which alter mate with the teeth of the other one, S2116.

teeth being intended to engage stops suitably arranged on the guide so that the wheels are rotated and cause the stop controlling the reciprocating member to come in and out of engagement with said memher in due sequence. According to this invention the same result is attained by means of very simple means by arranging the stops intended to cooperate with the rotating memher so that the full reciprocation of the reciprocating member is allowed or prevented in proper sequence while using a single star wheel.

. In the annexed drawing an arrangement according to this invention is shown by way of example as applied to a push-button switch.

Figure 1 is a front view the circuit being open; Fig. 2 is the corresponding rear view; Fig. 3 is a front view the reciprocating member having another position; Fig. 4: is a front view the circuit being closed; Fig. 5 is the corresponding rear view; Fig. 6 is a front view the reciprocating member having another position and Fig. 7 is a longitudinal section. 1

The plate 1, to which one of the wires is secured, is provided with a slot in which reciprocates the head 2' of a rod 2, this rod being provided with a push-button 3 and encircled by a coil spring 4 intended to keep the button in a given position.

The plate 5 (Fig. 2) to which the other wire leads, is insulated from the plate 1 and ends in a contact piece 5 arranged at the Specification of Letters Patent.

Patented Apr. 18, 1916.

Application filed. March 27, 1915. SerialNo. 17,489.

end of the slot of the plate 1, so that it may close the circuit together with the head 2 of .the. rod 2 when said head reaches the end of the slot.

A wheel 6 having three teeth is pivoted on the head 2 of the rod 2 and four stops are provided on the plate 1 by suitably cutting or shaping portions of the plate 1, these stops being intended to be engaged by the teeth of the wheel in order to cause it to rotate.

The stop 7 is arranged at one of the sides of the rod 2 (left hand, Fig. 1), the stops 8 and flare arranged opposite each other on the other side of the said rod and the stop IQ is arranged substantially in alinement with the axis of the rod 2. The plate 1 carrvlng the stops 7, 8, 9 and 10 may also be made of porcelain or other suitable mate rials either integral or not with the base plate. In this case the current must be fed to the star wheel by means of suitable contact pieces.

Because of the arrangement of the stops, the teeth of the wheel 6 engage them in proper sequence, so that at each reciprocation the wheel is caused to rotate and controls the stroke of the head. 2 by allowing it to reach the contact piece 5' or by causing it to be stopped in the position shown in Fig. 2.

Assuming the switch is in the position shown in Figs. 1 and 2 in which the circuit is open, it is obvious that by pushing on the button 3, the rod 2, head 2' and Wheel 6 are raised and at the end of the stroke the upper tooth of the wheel engages the stop 10 so that the wheel is caused to take the position shown in Fig. 3. On the button being released, the spring 4: carries back the head 2 and before it reaches the end of the slot, the left tooth of the wheel 6 engages the stop 7 which causes the wheel to effect a little rotation, so that the wheel takes the position shown in Fig. 4c, in which the head 2 comes in contact with the piece 5 (Fig. 5) and closes the circuit. Now, by pushing again on the button 3, the right tooth of the wheel 6 engages the stop 9 before reaching the end of the slot so that the wheel takes up the position shown in Fig. 6; then on releasing the button the left hand tooth engages the stop 7 and causes the wheel to rotate so that its righthand tooth engages the stop 8 (Fig. 1) and the head 2 is again stopped at a certain distance from the end of the slot and the circuit is broken.

By the described arrangement of the stops it is possible to obtain in proper sequence two different positions of the single Wheel having three teeth with regard to the stops for efiecting the contact, four stops arranged on the guide and intended to cooperate with the teeth of the wheel in order to cause it to rotate in proper sequence so as to close or open the circuit and means for effecting the reciprocation of said member.

2. In an electric switch actuated by pressure or pull, a member reciprocating in a guide, a single wheel having three sharpened teeth pivoted on said member, means on said member for closing the circuit, two stops opposite each other arranged on the guide at one side with regard to the line described by the axis of the wheel during reciprocation, a stop on the opposite side of said line and another stop substantially in alinement with said lines.

3. In an electric switch actuated by pressure or pull, a member reciprocating in a guide, asingle wheel having three sharpened teeth pivoted to said member, means on said member for closing the circuit, two stops on the guide opposite each other and ar ranged at one side with regard to the line described by the axis of the wheel during reciprocation, an intermediate stop on the opposite side and another stop substantially in alinement with said line.

In testimony whereof I afiix my signature in presence of two witnesses.

TOMMASO BOZZETTI.

Witnesses: I

CARLo CARROT, C. S. TEYLES.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner 01 Iatentl, Washington, D. 0. 1 

